US4370908A - Cutting head for filter assembler - Google Patents

Cutting head for filter assembler Download PDF

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Publication number
US4370908A
US4370908A US06/138,092 US13809280A US4370908A US 4370908 A US4370908 A US 4370908A US 13809280 A US13809280 A US 13809280A US 4370908 A US4370908 A US 4370908A
Authority
US
United States
Prior art keywords
knife
drum
cutting head
spring
knives
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/138,092
Other languages
English (en)
Inventor
Michael E. DeAlto
Joseph D. DiGiacomo
Clifford R. Marritt
Edward G. Preston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mpac Group PLC
Original Assignee
Molins Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Molins Ltd filed Critical Molins Ltd
Assigned to MOLINS LIMITED 2 EVELYN ST DEPTFORD LONDON SE8 5DH ENGLAND A CORP OF reassignment MOLINS LIMITED 2 EVELYN ST DEPTFORD LONDON SE8 5DH ENGLAND A CORP OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARRITT, CLIFFORD R., PRESTON, EDWARD G., DE ALTO, MICHAEL E., DI GIACOMO, JOSEPH D.
Application granted granted Critical
Publication of US4370908A publication Critical patent/US4370908A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • A24C5/473—Cutting the connecting band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4844—Resiliently urged cutter or anvil member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9406—Radially adjustable tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool
    • Y10T83/9469—Adjustable
    • Y10T83/9471—Rectilinearly

Definitions

  • This invention is concerned with a cutting head for a filter assembler, which is a machine for making filter cigarettes by joining filter portions to tobacco rods by means of uniting bands. These bands are cut from a web which is often of cork-like appearance and is for that reason usually referred to as "cork”.
  • a common form of cutting head comprises a drum carrying a number of circumferentially spaced knives which cooperate with anvil inserts in a drum carrying the cork web, each cut being achieved by a pinching action.
  • each individual knife is pivotally mounted on its carrier drum and is radially adjustable with respect to the axis of the drum. This allows the cutting edge of each knife to be set at a desired distance from the axis of the drum, while the freedom of pivotal motion accommodates any lack of parallelism between the axis of the cutting head drum and that of the drum carrying the cork web.
  • a cutting head for a filter attachment machine comprises a drum carrying a number of knives each of which is urged radially outwards by at least one spring against an adjustable retaining device by which the normal distance of the cutting edge from the axis of the drum can be adjusted.
  • each knife moves radially inwards against the action of the spring or springs, which thus provide a controlled cutting force.
  • This controlled force contrasts with prior arrangements in which the cutting force was transmitted through a pivot without inherent flexibility (apart from any flexibility in the shaft supporting the cutting drum) so that an excessive cutting force could arise if the cutting head was incorrectly adjusted in regard to the radial position of one or more knives and/or in regard to the distance of the cutting head from the cork drum.
  • the adjustable retaining device for each knife comprises a spindle lying substantially along a cord of the drum (e.g. midway between the ends of the knife) and having an eccentric portion engaging the knife so that rotation of the spindle alters the normal radial position of the knife (i.e. the position while the knife is not cutting).
  • Each knife is preferably engaged by two springs at or near its opposite ends.
  • a ring of elastic material near each end of the drum serves as a spring engaging all the knives.
  • each knife may have its own separate spring at each end, for example in the form of one or more spring washers.
  • each knife is located along a spring beam which is resiliently flexed and engages the knife so as to urge it radially outwards; preferably the center of the beam is pivotable on the bottom surface of a slot containing the knife and the beam, or serves as a fulcrum for the knife.
  • pivotal motion is provided by a rounded projection on the inner surface of the beam serving as a fulcrum; alternatively a fulcrum (possibly in the form of an insert with a rounded head) may be fitted in the bottom of the groove.
  • the beam for each knife may be pre-stressed by a retaining device which displaces the knife radially inwards through a predetermined or adjustable distance.
  • the retaining device may comprise a pin which is inserted through an aperture in the body of the knife and has an eccentric portion which displaces the knife when the pin is rotated about its axis.
  • FIG. 1 is a sectional view of one cutting head taken on the line I--I in FIG. 2;
  • FIG. 2 is an end view of the head shown in FIG. 1, with part of the end plate broken away to show one of the knives;
  • FIG. 3 is an end view of the spindle acting as a retaining device for one knife
  • FIG. 4 is a side elevation of the spindle shown in FIG. 3;
  • FIG. 5 is a fragmentary section similar to FIG. 1, but of a different form of cutting head.
  • FIG. 6 is similar to FIG. 5, but shows another different cutting head.
  • the cutting head comprises a drum 10 mounted on a shaft 11 and driven via a key 12.
  • the drum carries five circumferentially spaced knives 13 in radial slots 14, only one knife being shown in FIG. 1.
  • Each knife as shown in FIG. 2, comprises a body 13A and an edge member 13B formed with a cutting edge 13C. Midway between the ends of the knife there is a cylindrical aperture 14 through which passes an adjustable retaining device 15 shown more particularly in FIGS. 3 and 4. Near each end of the knife there is a plunger 16 which urges the knife radially outwards through the action of compressed spring washers 17 and 18 engaging between a head 16A on the plunger 16 and a fixed surface of the drum.
  • each retaining device 15 comprises a spindle having coaxial small and large diameter end portions 20 and 21 respectively. Between these end portions there is an eccentric cylindrical portion 22 having an axis 23 which is parallel to but offset from the axis 24 of the portions 20 and 21.
  • the drum 10 has appropriate machined bores forming bearings for the portions 20 and 21, while the eccentric portion 22 lies in the slot 14 containing the knife.
  • a slot 25 in the end of the portion 21 allows the device 15 to be rotated by a screwdriver or similar tool.
  • the retaining devices 15 are inserted into position, with the axis 23 of the eccentric portion 22 of each retaining device lying outside the axis 24. After that, rotation of the device 15 in either direction causes the eccentric portion 22 to displace the knife towards the axis of the drum 20 against the action of the spring washers. This allows the normal distance of the cutting edge 13C of each knife from the drum 10 to be adjusted.
  • the retaining device 15 is shown in the drawings after 180° of rotation, giving the maximum inward displacement of the knife.
  • Friction tends to prevent inadvertent rotation of the retaining device 15 during use.
  • a locking device for each retaining device comprising a pin 26 lying parallel to the axis of the drum 10 and capable of engaging and locking the larger diameter portion 21 of the retaining device.
  • the locking pin 26 has a part-cylindrical recess 26A which receives the side of the portion 21 of the retaining device, and threaded end portion 26B which is engaged by a nut 27. Tightening of the nut 27 pulls the wall of the recess 26A against the retaining device, which is thus locked against inadvertent rotation.
  • Circular end plates 28 and 29 cover the ends of the drum 10, being secured by screws 35.
  • the spring washers 17, 18 may be of the type known as Belleville washers.
  • One of the washers of each pair e.g. washer 18
  • the washer 17 may be one requiring approximately 400 lb to flatten it, while the washer 18 may have a flattening load of about a quarter that amount. This allows adjustment of the radial position of each knife to be made against a relatively light spring force. Also, each knife moves radially inwards slightly during cutting against a relatively light spring force before applying a full cutting force through the action of the stiffer washer. In addition, this allows each knife to align itself with the cooperating anvil surface (i.e. in the event it is not exactly parallel to the anvil) against the resistance of a light spring force.
  • the surface of the head 16 adjacent to the washer 18 may be slightly conical (e.g. with an inclination of 3°40') so as to prevent complete flattening of the washer 18.
  • FIG. 5 shows part of a different form of cutting head 30.
  • This has five knives 31 which are similar to the knives in the previous example, except that the inner surface of each knife body has a slightly different shape as shown.
  • each knife is held in position by an adjustable retaining device 32 which is identical to the device 15 in the previous example and operates in the same manner.
  • FIG. 5 differs from the previous example in that, in place of the spring washers, there is a sleeve 33 of urethane rubber or other elastomeric material at each end of the drum.
  • the sleeves 33 fit into annular recesses in the ends of the drum and engage and act upon all the knives.
  • Circular end plates 34 secured by screws to the ends of the drum retain the sleeves 33 in position.
  • Each sleeve may comprise concentric parts of which the outer part is softer and thinner than the inner part to provide a dual spring rate effect similar to that of the Belleville washers in FIGS. 1 to 4.
  • the spring washers at each end of each knife may be replaced by a rubber or other resilient pad or by a different form of spring.
  • FIG. 6 is a longitudinal section through part of a cutting head which comprises a shaft 109 carrying a drum 110 formed with a number of circumferentially spaced longitudinal slots 111 each of which contains a knife body 112 having a cutting edge 113.
  • End plates 114 and 115 on the drum locate the knives, for which purpose they have flanges 114A and 115A engaging over the ends of the knife bodies.
  • a spring beam 116 extends parallel to the knife body and has radial projections 116A and 116B at its ends and a central rounded projection 116C. This last projection serves as a fulcrum on which the knife can pivot relative to the drum to accommodate any lack of parallelism between the knife edge 113 and the surface of the anvil on the cork drum (not shown).
  • a retaining device 117 projects through an aperture 118 in the knife body, and is similar to the retaining device in the previous examples.
  • Adjustment of the normal position of the knife may be achieved by rotating the retaining device through different angles (up to a maximum of 180°); a locking pin may be provided to lock the retaining device in any desired position, as in the previous examples.
  • the retaining device may be arranged to lock only in one position (after 180° of rotation) to provide a predetermined displacement of the knife.
  • the clearance space 119 between the beam 116 and the bottom of the slot 111 is shown somewhat exaggerated. In practice a smaller clearance may be provided to limit the amount by which the beam can flex to avoid overstressing of the beam.
  • the radial projection 116C may extend inwards to engage the bottom surface 119 of the slot in the drum, in which case the projections 116A and 116B would extend outwards to engage the inner surface of the knife body.
  • the central protrusion serving as the fulcrum may be formed or mounted on the knife on the bottom of the slot 111. Projections engaging the ends of the beam may then be formed on the bottom of the slot 111 or on ends of the knife, as the case may be; in that case the beam can be of uniform cross-section along its length.
  • Each of the retaining devices mentioned above may be modified as follows.
  • the narrow end portion 20 of the spindle is omitted, and the length of the eccentric portion 22 is reduced; the shortened eccentric portion engages in a recess in the knife, instead of passing through the knife.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Details Of Cutting Devices (AREA)
US06/138,092 1979-04-05 1980-04-07 Cutting head for filter assembler Expired - Lifetime US4370908A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7912075 1979-04-05
GB7912075 1979-04-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US06/440,418 Division US4537104A (en) 1979-04-05 1982-11-09 Cutting head for filter assembler

Publications (1)

Publication Number Publication Date
US4370908A true US4370908A (en) 1983-02-01

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ID=10504375

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/138,092 Expired - Lifetime US4370908A (en) 1979-04-05 1980-04-07 Cutting head for filter assembler

Country Status (2)

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US (1) US4370908A (ru)
JP (1) JPS55159786A (ru)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444080A (en) * 1981-01-09 1984-04-24 Grapha-Holding Ag Tool for making rows of perforations in paper webs or the like
US4485710A (en) * 1981-06-05 1984-12-04 Hauni-Werke Korber & Co. Kg Apparatus for severing running webs of tipping paper or the like
US4503867A (en) * 1982-06-01 1985-03-12 Hauni-Werke Korber & Co. Kg Apparatus for severing a running web of tipping paper or the like
US4699033A (en) * 1985-03-27 1987-10-13 Sasib S.P.A. Device for dividing a continuous web of wrapping material into successive single sections
US4700481A (en) * 1986-05-23 1987-10-20 The Singer Company Cutter head assembly for power planer
US4949615A (en) * 1987-05-21 1990-08-21 Sandvik Hard Materials, Ltd. Indexable insert cutters
US5775194A (en) * 1995-02-09 1998-07-07 Sasib S.P.A. Device for making cuts in the direction of the advance of pieces of thin material
US20090029837A1 (en) * 2007-07-28 2009-01-29 Mansfield Board Machinery Limited Stitch flap cutting block
USD907997S1 (en) 2018-08-10 2021-01-19 Berry Global, Inc. Drink cup lid
USD911168S1 (en) 2019-03-05 2021-02-23 Berry Global, Inc. Drink cup lid
US11040499B2 (en) 2017-08-07 2021-06-22 Berry Global, Inc. Method and apparatus for thermoforming an article
US11234542B2 (en) 2013-03-15 2022-02-01 Berry Plastics Corporation Drink cup lid
US11433591B2 (en) 2019-02-06 2022-09-06 Berry Global, Inc. Process of forming polymeric material
US11548701B2 (en) 2017-04-07 2023-01-10 Berry Plastics Corporation Drink cup lid
US11891488B2 (en) 2019-02-06 2024-02-06 Berry Global, Inc. Polypropylene sheets and articles

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310922A (en) * 1919-07-22 Cutting mechanism fob
US2181197A (en) * 1939-04-08 1939-11-28 Samuel M Langston Co Device for making box blanks
GB878566A (en) * 1957-05-29 1961-10-04 Johansson Ab C E Improvements in and relating to gauge block holders
GB934295A (en) * 1961-07-03 1963-08-14 Eryk Stefan Doerman Improvements in or relating to cutting apparatus
US3174372A (en) * 1962-03-19 1965-03-23 William F Huck High speed web cutting and delivery machine
US3499370A (en) * 1968-03-11 1970-03-10 Langston & Co Tab cutter
US3828637A (en) * 1972-02-07 1974-08-13 Dyk Res Corp Van Web cutter
US4240313A (en) * 1978-12-08 1980-12-23 Philip Morris Incorporated Rotary cutting knife mounting

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033029B2 (ru) * 1972-02-29 1975-10-27
JPS5417471B2 (ru) * 1973-04-13 1979-06-29
JPS5238690B2 (ru) * 1973-05-28 1977-09-30

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310922A (en) * 1919-07-22 Cutting mechanism fob
US2181197A (en) * 1939-04-08 1939-11-28 Samuel M Langston Co Device for making box blanks
GB878566A (en) * 1957-05-29 1961-10-04 Johansson Ab C E Improvements in and relating to gauge block holders
GB934295A (en) * 1961-07-03 1963-08-14 Eryk Stefan Doerman Improvements in or relating to cutting apparatus
US3174372A (en) * 1962-03-19 1965-03-23 William F Huck High speed web cutting and delivery machine
US3499370A (en) * 1968-03-11 1970-03-10 Langston & Co Tab cutter
US3828637A (en) * 1972-02-07 1974-08-13 Dyk Res Corp Van Web cutter
US4240313A (en) * 1978-12-08 1980-12-23 Philip Morris Incorporated Rotary cutting knife mounting

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444080A (en) * 1981-01-09 1984-04-24 Grapha-Holding Ag Tool for making rows of perforations in paper webs or the like
US4485710A (en) * 1981-06-05 1984-12-04 Hauni-Werke Korber & Co. Kg Apparatus for severing running webs of tipping paper or the like
US4503867A (en) * 1982-06-01 1985-03-12 Hauni-Werke Korber & Co. Kg Apparatus for severing a running web of tipping paper or the like
US4699033A (en) * 1985-03-27 1987-10-13 Sasib S.P.A. Device for dividing a continuous web of wrapping material into successive single sections
US4700481A (en) * 1986-05-23 1987-10-20 The Singer Company Cutter head assembly for power planer
US4949615A (en) * 1987-05-21 1990-08-21 Sandvik Hard Materials, Ltd. Indexable insert cutters
US5775194A (en) * 1995-02-09 1998-07-07 Sasib S.P.A. Device for making cuts in the direction of the advance of pieces of thin material
US20090029837A1 (en) * 2007-07-28 2009-01-29 Mansfield Board Machinery Limited Stitch flap cutting block
GB2451459B (en) * 2007-07-28 2011-12-07 Mansfield Board Machinery Ltd Stitch flap cutting block
US8196500B2 (en) * 2007-07-28 2012-06-12 Mansfield Board Machinery Limited Stitch flap cutting block
US11234542B2 (en) 2013-03-15 2022-02-01 Berry Plastics Corporation Drink cup lid
US11702258B2 (en) 2017-04-07 2023-07-18 Berry Plastics Corporation Drink cup lid
US11548701B2 (en) 2017-04-07 2023-01-10 Berry Plastics Corporation Drink cup lid
US11040499B2 (en) 2017-08-07 2021-06-22 Berry Global, Inc. Method and apparatus for thermoforming an article
US11667090B2 (en) 2017-08-07 2023-06-06 Berry Global, Inc. Method and apparatus for thermoforming an article
USD976105S1 (en) 2018-08-10 2023-01-24 Berry Global, Inc. Drink cup lid
USD907997S1 (en) 2018-08-10 2021-01-19 Berry Global, Inc. Drink cup lid
USD993770S1 (en) 2018-08-10 2023-08-01 Berry Global, Inc. Drink cup lid
USD1030488S1 (en) 2018-08-10 2024-06-11 Berry Global, Inc. Drink cup lid
US11433591B2 (en) 2019-02-06 2022-09-06 Berry Global, Inc. Process of forming polymeric material
US11679542B2 (en) 2019-02-06 2023-06-20 Berry Global, Inc. Process of forming polymeric material
US11891488B2 (en) 2019-02-06 2024-02-06 Berry Global, Inc. Polypropylene sheets and articles
USD911168S1 (en) 2019-03-05 2021-02-23 Berry Global, Inc. Drink cup lid
USD984894S1 (en) 2019-03-05 2023-05-02 Berry Global, Inc. Drink cup lid
USD993771S1 (en) 2019-03-05 2023-08-01 Berry Global, Inc. Drink cup lid
USD1031439S1 (en) 2019-03-05 2024-06-18 Berry Global, Inc. Drink cup lid

Also Published As

Publication number Publication date
JPS55159786A (en) 1980-12-12
JPH0240310B2 (ru) 1990-09-11

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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:DE ALTO, MICHAEL E.;DI GIACOMO, JOSEPH D.;MARRITT, CLIFFORD R.;AND OTHERS;REEL/FRAME:004019/0564;SIGNING DATES FROM 19800314 TO 19800331

Owner name: MOLINS LIMITED 2 EVELYN ST DEPTFORD LONDON SE8 5DH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DE ALTO, MICHAEL E.;DI GIACOMO, JOSEPH D.;MARRITT, CLIFFORD R.;AND OTHERS;SIGNING DATES FROM 19800314 TO 19800331;REEL/FRAME:004019/0564

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